Oil-pump



UNITED 'STATE/s PATENT OFFICE..

SIDNEY J. EGINTON, OFBRADFORD, PENNSYLVANIA.

OIL-PUMP.

' SPECIFICATION forming part of Letters Patent m1364232, dated June 7.18am

Application filed March 19, 18487. Serial No. 231,569. (o model.)

To all whom, it may concern:

Beit known that I, SIDNEY J. EeINroN, a citizen of the United States, residing at Bradford, in the county of McKean and State of Pennsylvania, have invented a new and useful Improvement in OilPumps, of which the following is a specification.

My invention relates to an improvement in oil-pump apparatus; and-it consists in the peeuliar construction and combination of devices,` that will be more fully set forth hereinafter, and particularly pointed out in the claims.

In the drawings, Figure l is an elevation of a rig for pumping oil. Fig. 2 is'avertical sectional view of my improved oil-pump apparatus. Fig. 3 is a detailed perspective view of the sleeve for connecting the tubing with the stand-pipe and suspending the tubing from the upper end of the casing.

In Fig. l, c represents the derrick or hoist. b represents thewalking-beam attached to the upper end of the plunger-rod c. d represents the steam-engine or other motor, the fly-wheel Y of which is connected to one of the walking- -beams by means of a pitman,e,so that the walk- Vingbeam will be oscillated when the ily-wheel rotates, and thereby cause the plunger-rod c to reciprocate in the puinp-tubing- All of this is of the usual well-known construction.

A represents the easing of the oil-well, the upper end of which projects above the level of the ground, and is provided with the screwthreads B.

C represents an annular collar, which is I screwed on the upper end of the casing and is provided with an annular vertical npwardly projecting flange, D.

E represents a circular plate, which fits on the upper end of the'casing and in the circu lar spacein the annular collar formed by the flange D. In the center of the plate E is avertical opening, F.

G represents a vertical sleeve, which extends downward through the opening F, and is provided at a suitable distance from its upper end with an annular projecting collar or iiange, H, which is formed integrally with the sleeve and bears upon the upper side of the plate E. The

upper end of the said sleeve is provided with a countersunk enlargement which is screwthreaded, and the lower end of the said sleeve, Which extends downward in the casing for a which the plunger-rod extends.

considerable distance below the plate E, is

provided with a similar countersunk enlargement having a screw-thread.

I represents the pumptubing, which extends downward in the casing to thebil in the well, and the upper end of the said tubing is screwed to the depending lower end of the sleeve G, and thereby the said tubing is supported by the said sleeve and is suspended from the upper end of the casing.

To the' upper end of the sleeve is screwed a vertical stand-pipe, K. The bore of the sleeve corresponds in size to the bore of the tubing and of the stand-pipe, and thereby the plunger attached to the plunger-rod c, and not shown herein,as it is of the usual construction, is adapted to be drawn up through the tubing by the derrick or hoist when necessary. The upper end of the stand-pipe is closed and is provided with the packingbox L, through From one side of the stand-pipe, and communicating with the same, extends a discharge-pipe, M, which leads to a suitable tank or other receptacle for the oil.

The reciprocating motion of the plunger-rod necessarily imparts a vibratory motion to the stand-pipe, and this in time causes the upper end of the sleeveG- to break off j ust above the collar or flange H. Heretofore these sleeves G have not been provided with the depending lower end, and the upper end of the tubing I has been screwed in the upper portion of the sleeve,just below the lower end of the standpipe. The defect resulting from this constructionv is that when the upper portion of the sleeve breaks, the tubing, which is entirely supported and suspended by the said sleeve, becomes detached and drops down into the well, thus entailiug a great expenditure of time, labor, and money in order to iish it up from the well. I provide the sleeve with the depending lower end, G,as shown in Figs. 2 and 3, and couple the upper end of the pump-tubing to the lower end of the said depending portion of the sleeve, and thereby separate the upper end of the tubing from the lower end of the stand-pi pe by a considerable distance. As the lower portion, G, on the sleeve Iits snugly in the opening F ofthe circular plate, the sleeve is prevented from vibrating with the standpipe, and thereby there is no danger of the up- IOO per end of the tubing becoming uncoupled from the lower end of the sleeve, and this also causes the strain exerted by the vibrating stand-pipe to be borne by the upper projecting portion of the sleeve, thereby causing the latter, when it breaks, to part just above the collar or flange H, leaving the lower portion of the sleeve intact, and thus preventing the tubing` I from becoming disengaged and dropping in the well.

Having thus described my invention, I elaim- I I. In an oil-puinp apparatus, the couplingsleeve G, adapted for the attachment of the stand-pipe and provided with the outwardlyprojecting supporting-ange H, to rest on the supporting-plate, and the lower portion, G',

depending below the said fiange and adapted for the attachment of the pump-tubing, sub` stantially as described.

2. In an oil-pump apparatus, the combination 'of the easing A, the plate E on the upper side of the easing,having the central opening, the sleeve G,having the depending portion G extending through `and fitting snugly in the opening in the plate E, the said sleeve being further provided with the fiange H,bearing on the upper side of the plate E to support the sleeve, the upper portion projecting above the said flange, the pump-tubing I,coupled to the lower depending portion, G', of the sleeve, and the stand-pipe K, coupled to the upper projecting end of the sleeve, all combined and arranged to operate substantially in the manner and for the purpose described.

In testimony that I claim the foregoing as my own I have hereto affixed my signature in presence of two witnesses.

SIDNEY J. EGINTON.

Witnesses:

WM. N. MOORE, E. G. SIGGERS. 

